Guard for rubber mills and like machines



PATENT OFFICE.

LUCIEN GAISMAN, 0F MANCHESTER, ENG-LAND, ASSIGNOR 0F ONE-HALF TO SYLVAIN BREYFUS, OF MANCHESTERENGLAND.

GUARD FOB, RBBER MILLS AND LIKE MACHINES.

To ZZ idiom it may concern.'

Be it known that l, -L-UomN (ilustran, citizen of the Republic of Switzerland, and a resident of Longsight, Manchester,` in the county of Lancaster, England, have invented certain new and useful Improvements in Guards for -Rubber Mills and like Machines, of which the following is a specification.

T his invention-relates to guards for rubber and like mills and has for its object to provide an improved guard especially ap plicable to rubber mills such as grinders, mixermwashers and ealenders and which while affording effectual means Jfor preventingthe hands oi? the operative beingnipped or crushed between the rolls ot the mill will not interfere with the feeding ot' thevmaterial under treatment to and between the rolls.

A guard in accordance with this invention comprises a piece, length, plate orthe like ot wood, metal orrotner appropriate substance arranged lengthwise of and vertically orA at an inclination above the roll to be guarded with 'its lower or. rear edge at a l :,iuitable distance above the periphery of the roll to permit of the passage oi a normal thickness or ipuamityI ot material und being soadapted, or ha ving); its lower part or edge so adapted;y that while it may yield to pen mit the passagel of an abnormal thickness yor quantity oi material it will nevertheless otter an obstruction to the operatives han should the oi'ierative pass his bands too 4far over or around rthe roll.

in the aecoinpanying` drawings Figures l, 2 and 3 are respectively an elevation, a plan and a transverse section on the line fri-11' in Fig. 12 of a' rubber :o'inr'irieh mill fitted at the front and rear with one form. et guard in accordance with the invention, only suiiicient ot the mill necessary 'tor elucidation being illustrated. Figs. verse sections of modified arrangements of guard. Referring iirst to drawings the form o.. illustrated therein comprises a member i consisting ot a length of woe-d, ha"y attached to its ends triangular pieces B whereby is supported at frames C,

an inclination on the side in which the rolls l), D are mounted. ConvenienthT the triaumilar pieces Speoeaton er Letters Patent.

4l, 5 and (i are trans-4 Patented May 25, 1920.

.applica-@imi and sesame@ 1ers. serial, No. 118,170.

l5, B may be such that the member A liesV thickness of material under treatment butif the operator who is feeding the material to the rolls should, while feeding, pass his hands too far over the top of either roll, they will come into Contact with the corresponding guard and his attention willv thereby be called to the fact.

n order to allow the lower edges of the members A, A of the guards to yield to permit the passage oi an abnormal thickness or quantity of material the triangular end members B, B of the guards may simply rest on the side frames C, C so that the guards may tilt about the lower front corners B1, B1 of the end members B, B. If

desired thel'v guards may be weighted andA stops B2, B2 clips or the like fitted to tbe vinner sides ofthe end membersB, B or the side frames C, C to prevent lateral displacement of the guard.,

Instead of the guards being adapted to tilt about the corners B1, B1 ofthe end memberB, B to perlnitthe passage oi' an vabv normal thickness of material, the end members B, B may, as shown in Fig. BA, be

vlunged at their corners B1, B1,to the side frames C, C by hinges B3 on whichv the vguards can rock to allow the edges' A1 to yield. Ur the members A, A may comprise ya 'tired part Fig. 4 and a yieldingpart' hinged to lthe iXed part' and, it desired, weighted y a metal bar a2 or otherwise, or,

' as shown in Fig. 6, the members A, A may be made of lesser` width and their lower edges provided with yielding' naps as or' rubber or other suitable material.- in any event, lioweverthe arrangement is such that the operator' cannot pass his hands over a roll. without their coming; into contact with the guard.

The inclination of the members A, A pie vents them from interfering with the feeding of the material to the rolls and the op erators view of the other roll and between the rolls. Further the inclined members A? A serve as chutes for feeding the material to the rolls when it is fed over the top of the guards inthe lirst stages of treatment.

According to the modification illustrated in F ig. o' the guard member A. is piroted at or about its upper edge and arranged vertically thougln'if desired7 it may be arranged at an inclination to the vertical. ln such cases the member A may be pivoted on a rod u* adjus'tably clamped by nuts e? in slots e1 in brackets E carried by the `frames C, C, and the member A may normally bear against a stop e or other suitable abutment. Or the member A may be in two parts or be provided with a yielding flap as above described with reference to Figs. l and 5. In each case the member A is, asbe'fore, `disposed with its lower edge approximately central of the roll to be guardedY andata distance above the periphery of same to permit the passage above of a normal thickness of material under treatment so that while the guard membei' A, or its lower part, is free to yield to allow the passage of an abnormal thickness of material, the operator cannot pass his lhands over the roll without their coming into contact with the guard member.

It' desired the member A of the improved guard. may bel of metal or other appropriate material.

As will be obvious various other modifications o the improved guard may be devised Without departing from the nature or spirit of the invention What l claimas my invention and desire to secure by Letters Patent is l. ln ya rubber mill., the combination with rollers and a supporting trame, of a guard vfor said rollersdisposed adjacent one of the rollers and spaced therefrom an amount slightly greater'thanthe thickness oi' mate.- rial normally passing between the rollers and the guard7 said guard being hingedly mounted on the supporting frame, whereby the passage of abnormal ltliiclmesses of material between the guard andthe rollers geene will be permitted by the swinging of the 5G guard 2. ln a rubber mill, the combination with rollers and a supporting frame, of a guard for said rollers comprising a member eX- tending longitudinally of one of said rollers, and spaced therefrom an amount slightly greater than the thickness of material n0rmally passing between the rollers and the guard, end members on said guard memberJ and means for mounting onsaid supporting frame said end members and thereby the guard member to permit the guard member to swing away from the roller when an abnormal thickness passes over the roller.

3. ln a rubber mill, thefcombination with rollers. and a supporting frame, of a guard for said rollers spaced from one of said rollers an amount slightly greater than the thickness or' material normally passing over one or' said rollers, and means for mounting the guard on said supporting frame to permit the guard to yield automatically for permitting the passage over the rollers of abnormal thickness of material.

a. The improved guard for the rolls of rubber mills and like machines, comprising a guard member, and triangular end mem. bers for supporting said guard'member at an inclination longitudinally of the roll tov be guarded with its lower edge at a distance above the periphery thereof to permit the passage of ka normal thickness of material under treatment; the guard being adapted to tilt or rock on said triangular end members so that while said guard member oil'ers an obstruction to the hands of the operator if passed too far over or around the roll, the lower edge thereof may yield to permit the passage of an abnormal thickness of material.

ln witness whereof l have hereunto set my hand in the presence of two subscribing witnesses.

LUCEN GASMAN. lllitnesses:

EDMUND 'WARD Farmsen, t HAROLD Wennen 

